getValue

setValue

Replaces the value corresponding to this entry with the specified
value (optional operation). This implementation simply throws
UnsupportedOperationException, as this class implements
an immutable map entry.

equals

Compares the specified object with this entry for equality.
Returns true if the given object is also a map entry and
the two entries represent the same mapping. More formally, two
entries e1 and e2 represent the same mapping
if

toString

Returns a String representation of this map entry. This
implementation returns the string representation of this
entry's key followed by the equals character ("=")
followed by the string representation of this entry's value.